Improvement in fire-places



UNITED ,STATES PATENT OFFICE,

ADAM WYNNE, OF INDIANA, PENNSYLVANIA.

IMPROVEMENT IN FIRE-PLACES.

Specification forming part of Letters Patent No. 146,97l dated January 27, 1874; application filed January 5, 1874.

To all whom it may concern:

Be it known that I, ADAM WYNNE, of Indiana, in the county of Indiana and State of Pennsylvania, have invented certain new and useful Improvements in Hot-Air Back Walls for Fire-Grates; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accom panying drawings and to the letters of reference marked thereon, which form a part of this specification.

The nature of my invention consists in the construction and arrangement of a hot-air back wall, made of cast-iron or other suitable material, to be used in fire-grates or furnaces, or other heating apparatus, for the purpose of supplying heated air to the rooms above that which such heating apparatus is located, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my invention appertains to make and use the same, I will now proceed to describe its construction and operation, referring to the annexed drawing, in which- Figurelis afront view ofthe back wall. Fig. 2 is an interior view of the same, and Fig. 3 is a transverse section of the same in reduced dimensions.

' titions, cut, running alternately from one end to near the other, so as to form a zigzag passage, through which the air passes to become sufficiently heated. (l represents the cold-airsupply pipe or flue, supplying air to the interior of the back wall A B, either from the inside of the room, or from the outside of the building, as may be desired; or this flue may be so arranged as to take air both from the inside and outside of the building. Ordinarily,

the common chimney-liuc may be used, to be provided with an opening a few inches from the hearth, where it is connected with the back wall. Frein this opening the ue is discontinued to the height of the outlet D, where it is again connected with the back wall. In the lower part of the corrugated front A are a number of perforations, x x, communicating with a pipe, E, permanently attached to the back of the front A. This pipe is closed at oneend, and the other end open to be fed with cold air from the common supply-pipe G. The pipe E thus,througl1 the perforations cc a', supplies the fire with oxygen, which assists combustion, and materially improves the draft of the chimney in which the back wall is inserted. ThisV pipe E may be advantageously applied to all fire-place grates. The bricks are huilt against the edges of the front A, and between it and the grate-front. f

The hot-air back wall thus constructed is durable, and saves considerable expense, especially as it dispenses with the large brick stacks necessary in houses where stoves are used in the upper stories.

A rire-place on the first floor, or a furnace in the cellar, with this back wall, can be made to heat the entire house, registers being placed in the various rooms to shut off or let on the heated air.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The corrugated plate A, provided near its base with perforations w and the interior air-pipe E, substantially as and for the purpose herein specified.

2. The hinged plate A, having perforations rv and interior air-pipe E, in combination with the part B, having partitions a, inlet C, and outlet D, constructed and arranged as and for the purpose set forth.

In testimony that I claim the foregoing as my own I afx my signature in the presence of two witnesses. ADAM WYNNE.

Witnesses:

ADAM G. BRAUGHLEE, B. F. McOLUsKY. 

